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Oxygen vacancy engineering and rare earth ion modification in Er-doped Bi0.5Na0.5TiO3–BaTiO3 for piezo-photocatalysis.
- Source :
-
Ceramics International . Sep2024:Part B, Vol. 50 Issue 17, p30887-30893. 7p. - Publication Year :
- 2024
-
Abstract
- The pursuit of high-performance piezo-photocatalysts through structural modifications has been a focal point of investigation within the realm of related scientific disciplines. In this study, we successfully designed Er-doped Bi 0.5 Na 0.5 TiO 3 –BaTiO 3 combined with rare earth ion doping and solid solution modification, and the prepared particles exhibited homogeneous grain sizes and optimized concentrations of oxygen vacancies (O V). The synergistic incorporation of O V (accelerator for catalytic reaction) and Er3+ results in an impressive 12-fold enhancement of the piezo-photocatalytic rate when degrading the Rhodamine B dye. The optimal composition 0.96BNT-0.04BT-Er demonstrates outstanding electrochemical properties, including a superior photocurrent response and minimal impedance, highlighting its exceptional performance in piezo-photocatalysis. The fundamental enhancement in catalytic performance can be attributed to the reconfiguration of the band structure of 0.96BNT-0.04BT-Er, which has been meticulously calculated utilizing DRS and VB-XPS and the internal mechanism was explained in detail. This research serves as a source of inspiration for the investigation of solid solutions among piezo-photocatalysts and sheds light on the vital role of band structure in governing catalytic performance. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RARE earth ions
*SOLID solutions
*RHODAMINE B
*OXYGEN
Subjects
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 50
- Issue :
- 17
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 178090976
- Full Text :
- https://doi.org/10.1016/j.ceramint.2024.05.394